15532387641 has 9 divisors (see below), whose sum is σ = 22436211109. Its totient is φ = 10354675836.

The previous prime is 15532387597. The next prime is 15532387649. The reversal of 15532387641 is 14678323551.

It is a happy number.

The square root of 15532387641 is 124629.

It is a perfect power (a square), and thus also a powerful number.

15532387641 is a `hidden beast` number, since 1 + 5 + 532 + 3 + 8 + 76 + 41 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 15532387641 - 2⁷ = 15532387513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15532387649) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 353116 + ... + 394658.

Almost surely, 2^15532387641 is an apocalyptic number.

15532387641 is the 124629-th square number.

15532387641 is the 62315-th centered octagonal number.

It is an amenable number.

15532387641 is a deficient number, since it is larger than the sum of its proper divisors (6903823468).

15532387641 is an frugal number, since it uses more digits than its factorization.

15532387641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83092 (or 41546 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 15532387641 in words is "fifteen billion, five hundred thirty-two million, three hundred eighty-seven thousand, six hundred forty-one".